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<table width="100%" summary="page for Computers"><tr><td>Computers</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Prices of Personal Computers </h2>

<h3>Description</h3>

<p>a cross-section from 1993 to 1995
</p>
<p><em>number of observations</em> :  6259
</p>
<p><em>observation</em> :  goods
</p>
<p><em>country</em> :  United States
</p>


<h3>Usage</h3>

<pre>data(Computers)</pre>


<h3>Format</h3>

<p>A dataframe containing :
</p>

<dl>
<dt>price</dt><dd><p>price in US dollars of 486 PCs</p>
</dd>
<dt>speed</dt><dd><p>clock speed in MHz</p>
</dd>
<dt>hd</dt><dd><p>size of hard drive in MB</p>
</dd>
<dt>ram</dt><dd><p>size of Ram in in MB</p>
</dd>
<dt>screen</dt><dd><p>size of screen in inches </p>
</dd>
<dt>cd</dt><dd><p>is a CD-ROM present  ?</p>
</dd>
<dt>multi</dt><dd><p>is a multimedia kit (speakers, sound card) included ?</p>
</dd>
<dt>premium</dt><dd><p>is the manufacturer was a &quot;premium&quot; firm (IBM, COMPAQ) ?</p>
</dd>
<dt>ads</dt><dd><p>number of 486 price listings for each month</p>
</dd>
<dt>trend</dt><dd><p>time trend indicating month starting from January of 1993 to November of 1995.</p>
</dd>
</dl>



<h3>Source</h3>

<p>Stengos, T.  and  E.  Zacharias (2005) &ldquo;Intertemporal pricing and price discrimination : a semiparametric hedonic analysis of the personal computer market&rdquo;, <em>Journal of Applied Econometrics</em>, <b>forthcoming</b>.
</p>


<h3>References</h3>

<p>Journal of Applied Econometrics data archive : <a href="http://qed.econ.queensu.ca/jae/">http://qed.econ.queensu.ca/jae/</a>.
</p>


<h3>See Also</h3>

<p><code>Index.Source</code>, <code>Index.Economics</code>, <code>Index.Econometrics</code>, <code>Index.Observations</code></p>


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